43501-01-02-01 1/2-14 NPT Low Pressure Cable Seal

Introduction to the 43501-01-02-01 Low Pressure Cable Seal

When lube oil leaks from bearing housings or machine cases, it can compromise equipment reliability and create safety hazards. The 43501-01-02-01 from Bently Nevada provides a robust sealing solution for passing transducer cables through a single hole in a machine case or barrier. This low pressure cable seal is engineered to prevent fluid leakage along the outer jacket of the cables, helping you maintain a clean and safe operating environment.

Designed for use with one to four 95-ohm transducer cables or one to two 25mm DE and 50mm DE transducer cables, the 43501-01-02-01 offers flexibility for various monitoring setups. Its molded silicone rubber grommet creates a reliable seal, while the external pipe threads on both ends allow secure mounting to tapped holes and mating conduit or housings.

Key Features and Technical Specifications

The 43501-01-02-01 is built to deliver dependable performance in demanding industrial settings. Below are its core specifications:

• Manufacturer: Bently Nevada
• Product Type: Low Pressure Cable Seal
• High Pressure Side Thread Size: 1/2-14 NPT
• Low Pressure Side Thread Size: 1/2-14 NPT
• Fitting Options: 1/2-14 NPT, 3/4-14 NPT
• Overall Length (assembled): 35mm (1.4 inches) in tightened condition
• Pressure Rating: 345 kPa (50 psi) across grommet high pressure to low pressure
• Grommet Configuration: Accommodates up to two 25mm and 50mm DE cables; one hole punched, one partially pre-drilled

The seal is rated only on the cable outer jacket and seal body itself; it does not seal leaks through the cable braid or center conductor due to pinholes or cuts in the cable jacket, or through the probe or connector. The primary intended usage is to seal lube oil to exit bearing housings and machine cases.

Installation and Setup

Proper installation is critical to achieving a reliable seal. The 43501-01-02-01 mounts in a hole tapped with either ½-NPT or ¾-NPT pipe threads in the machine. Follow these general guidelines:

• Ensure the tapped hole is clean and free of debris before installation.
• Apply appropriate thread sealant to the external pipe threads to enhance sealing.
• Insert the cable(s) through the grommet, ensuring the grommet seats properly.
• Tighten the seal to the specified torque to achieve the 35mm assembled length in tightened condition.
• Verify that the seal is not overtightened, which could damage the grommet or cables.

Maintenance and Reliability

Regular inspection of the cable seal helps ensure long-term performance. Periodically check the grommet for signs of wear, cracking, or hardening, especially in environments with temperature extremes or exposure to oils. Verify that the seal remains properly tightened and that no fluid leakage is visible around the cable entry point.

Because the seal is rated to 1.0 psi absolute but limited in practice by the cable, probe, and connector, it is important to inspect the entire cable assembly for damage. Replace any damaged cables or connectors promptly to maintain the integrity of the seal.

Compatibility and Integration

The 43501-01-02-01 is designed to work with Bently Nevada transducer cables, including 95-ohm transducer cables and 25mm DE and 50mm DE transducer cables. It is suitable for use in bearing housings and machine cases where lube oil sealing is required. The seal's 1/2-14 NPT threads on both sides allow integration with standard conduit and housing fittings.

Troubleshooting Common Issues

If leakage is observed, consider the following:

• Check that the grommet is properly seated and not damaged.
• Verify that the seal is tightened to the correct length (35mm assembled).
• Inspect the cable jacket for cuts or pinholes that could allow fluid to bypass the seal.
• Ensure the tapped hole threads are clean and not stripped.

Product Support and Availability

The 43501-01-02-01 is available from AutoDCSTech. Please verify current lifecycle status and availability before ordering. Contact AutoDCSTech for pricing and lead time information.